Raman spectroscopy assisted residual stress measurement of plasma sprayed and laser remelted zirconia splats and coatings

被引：20

作者：

Das, Biswajit ^{[1
]}

Brodard, Pierre ^{[2
]}

Bandyopadhyay, P. P. ^{[1
]}

机构：

[1] Indian Inst Technol, Dept Mech Engn, Kharagpur 721302, W Bengal, India

[2] Inst Technol Chim ChemTech, Ecole Ingenieurs & Architectes Fribourg EIA FR, Blvd Perolles 80, CH-1705 Fribourg, Switzerland

来源：

SURFACE & COATINGS TECHNOLOGY | 2019年 / 378卷

基金：

瑞士国家科学基金会;

关键词：

Raman spectroscopy; Splat; Zirconia; Residual stress; X-ray diffraction; THERMAL BARRIER COATINGS; MECHANICAL-PROPERTIES; COOLING RATE; TEMPERATURE; BEHAVIOR; SOLIDIFICATION; INDENTATION;

D O I：

10.1016/j.surfcoat.2019.124920

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

This investigation deals with Raman and X-ray assisted stress measurement of plasma sprayed and laser remelted zirconia splats and coating. A Raman peak of tetragonal zirconia phase at 635.38 cm(-1) was used as a reference peak. The tensile residual stress in the as-sprayed and laser remelted single splat lied in the range of 1-2 GPa and 0.2-0.9 GPa, respectively. Surface residual stress of the as-sprayed coating is tensile and its magnitude increases upon laser remelting. Raman spectroscopy results are in agreement with those obtained using X-ray diffraction. It appears that Raman spectroscopy is suitable for quick and accurate measurement of residual stress for small sized Raman active objects and stress depth profiling of the bulk coating. Splat morphology was correlated with particle velocity and temperature. Microstructural aspects and mechanical properties of as-sprayed and laser remelted coating were also investigated.

引用

页数：10

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